SerialTester

SerialTester is a simple tool for sending commands to any connected serial device attached to your computer. This was initally created for issuing commands to my Arduino from my home server. I have packaged it up for anyone to make use of should the need arise.

P.S. I welcome all pull requests to drive this project forward.

Example Arduino Sketch

Below is an exmaple Arduino sketch designed to work with Serial Tester to make sure that everything is working as expected.

String readString;

void setup() {
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
    readSerial();

    if (readString.length() >0) {
      if(readString.startsWith("ON")) {
        digitalWrite(LED_BUILTIN, HIGH);
        Serial.println("LED is now ON");
      }
      else if(readString.startsWith("OFF")) {
        digitalWrite(LED_BUILTIN, LOW);
        Serial.println("LED is now OFF");
      }
      else {
        Serial.print("Unknown Command: ");
        Serial.println(readString);
      }
      
      readString="";
    } 
}

void readSerial() {
  while (Serial.available()) {
      delay(3);  //delay to allow buffer to fill 
      if (Serial.available() >0) {
        char c = Serial.read();  //gets one byte from serial buffer
        readString += c; //makes the string readString
      } 
    }
}